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GE 117D7343-A

Product Name: Speedtronic Mark V/VI Analog Output Module
Product Description: A high-resolution analog output interface module for GE Mark V and Mark VI turbine control systems. Converts digital setpoints from the VME controller into standard 4-20 mA or 0-10 V DC signals to drive field actuators such as control valves, variable frequency drives, and positioners in closed-loop combustion and auxiliary control loops.
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Detailed content

Technical Specifications:
  • Channels: 4 or 8 independent outputs (configuration dependent)
  • Output Signal: 4-20 mA DC two-wire, 0-10 V DC selectable
  • Resolution: 16-bit DAC per channel
  • Accuracy: ±0.1 % to ±0.2 % full scale
  • Load Capability: ≤ 600 Ω at 24 V DC (current mode)
  • Isolation: 1500 V DC channel-to-ground, channel-to-channel galvanic isolation
  • Backplane Power: +5 V DC from VME bus, ≤ 4 W
  • Operating Temperature: 0 °C to +60 °C
    Functional Features: Per-channel software ranging, open-circuit detection (drops below 3.6 mA on break), output hold on communication loss, output clamping, TMR redundant mounting support.
    Structural Characteristics: Flame-retardant ABS front housing, FR-4 multilayer PCB, gold-plated VME edge connector, per-channel front-panel LED, rear range/isolation jumpers.
    Working Principle: VME bus delivers digital value → 16-bit DAC converts to voltage → V/I stage generates isolated 4-20 mA → drives field loop.
    Installation Requirements: Insert into Mark V/VI I/O rack slot, shield twisted-pair cable, single-point shield grounding.
    Usage Notes: Never exceed 600 Ω loop resistance; replace only during controller switchover or shutdown; separate signal wire from power wiring.

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